diff --git a/CHANGELOG.md b/CHANGELOG.md
index d948dd54..7c47f27b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,14 @@ The git repositories are hosted at the following sites:
 * https://bacnet.sourceforge.net/
 * https://github.com/bacnet-stack/bacnet-stack/
 
+## [Unreleased] - 2025-11-15
+
+### Security
+### Added
+### Changed
+### Fixed
+### Removed
+
 ## [1.4.2] - 2025-11-15
 
 ### Security
diff --git a/CMakeLists.txt b/CMakeLists.txt
index b11949bb..cb5c0df3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.5 FATAL_ERROR)
 
 project(
   bacnet-stack
-  VERSION 1.4.2
+  VERSION 1.5.0
   LANGUAGES C)
 
 #
diff --git a/src/bacnet/version.h b/src/bacnet/version.h
index 7a7ff7aa..db1826f0 100644
--- a/src/bacnet/version.h
+++ b/src/bacnet/version.h
@@ -15,8 +15,8 @@
 #define BACNET_VERSION(x, y, z) (((x) << 16) + ((y) << 8) + (z))
 #endif
 
-#define BACNET_VERSION_TEXT "1.4.2"
-#define BACNET_VERSION_CODE BACNET_VERSION(1, 4, 2)
+#define BACNET_VERSION_TEXT "1.5.0.rc1"
+#define BACNET_VERSION_CODE BACNET_VERSION(1, 5, 0)
 #define BACNET_VERSION_MAJOR ((BACNET_VERSION_CODE >> 16) & 0xFF)
 #define BACNET_VERSION_MINOR ((BACNET_VERSION_CODE >> 8) & 0xFF)
 #define BACNET_VERSION_MAINTENANCE (BACNET_VERSION_CODE & 0xFF)